M17 action-will it take .45 calibres

Discussion in 'Gunsmithing Forum' started by hairbear1, Aug 14, 2011.

  1. hairbear1

    hairbear1 Active Member

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    I've have in my possession for a while a M17 action that had a .243 barrel in it which was stuffed and I've heard that you can use it to take a .45 calibre barrel.
    My question is what will I have to do to the bolt face and will this action take the pressures associated with a .45 calibre.I have a .45 calibre barrel from A&B and it seems like this could be a worthy project as I'm thinking of a .458 AccRel,regards
     
  2. c3shooter

    c3shooter Administrator Staff Member

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    Which M17? The Enfield Match rifle, or the Bushmaster AR style? The Enfield was used to create a VERY neat supressed carbine known as the DeLisle- in 45 ACP. The pressures of a .243 are MUCH higher than a .45 ACP, but bolt face does need modifying (and extractor) to handle the auto pistol case. Yours may have a modified extractor now- but check head diameter on .45 ACP and .243- I'm on the road, and don't have calipers w/ me.
     

  3. hairbear1

    hairbear1 Active Member

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    It's a Eddystone 1917 action.Heres' a few pics of the action.As far as I know I'm sure it's a military action.It's got a "W" stamped on the bolt with a "5N" stamped near it.
     

    Attached Files:

  4. john323

    john323 New Member

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    I built a 458 Win Mag on a 1917 knuckle buster several years ago. It will take the pressure. Be sure to straighten out the bolt handle.
     
  5. stalkingbear

    stalkingbear Well-Known Member

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    The 1917 action will accept .458 cartridges as long as they're not too long for it. The bolt face will have to be opened up.
     
  6. john323

    john323 New Member

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    Sorry I didn't mention the bolt face.